Drainage Repairs & Sewer Work in South West London

Drainage prices in South West London (2026)

Indicative ranges based on current SW London trade pricing. We always confirm a fixed total in writing before any work starts — no hourly clock-watching.

Prices include parts and labour where stated. £60 call-out fee applies; out-of-hours and weekend work may carry an unsocial-hours uplift, agreed up front.

What we see most often in SW London homes

The housing stock across SW, KT, SM and TW postcodes is a mix of Victorian terraces, 1930s semis, mansion blocks and newer flats — each with its own recurring faults. These are the ones we attend most often:

• Old Victorian and Edwardian terraces in SW/KT/SM often have ageing clay drains, displaced joints, and former lead pipework that complicate CCTV surveys and repairs.
• Mansion blocks and converted flats in TW/KT frequently have low water pressure and shared stacks, which can make diagnosis harder when symptoms affect multiple flats.
• 1960s–1980s ex-local-authority flats in parts of SW London often have shared soil stacks and ageing communal drainage, so one defect can affect several households.
• Thames Water hard-water areas in South West London can contribute to limescale build-up in pipework, affecting flow and increasing blockage risk.
• Tree-root ingress is common in older gardens and rear access lanes, especially where clay drains run near mature trees and boundary walls.
• Limited rear access, basements, and paved front gardens in SW London make excavation and reinstatement more expensive than in simpler suburban plots.

Brands and parts we work with

We carry common-fault parts on the van for the brands found in most SW London properties, so most jobs are resolved on the first visit.

DIY or call a pro?

Honest guidance — sometimes a YouTube tutorial is enough, sometimes calling us is the cheaper option once you factor in damage and time.

• DIY is reasonable for clearing a simple sink trap or visible gully debris if the pipework is accessible and there is no flooding.
• Call a pro for recurring blockages, foul smells, slow drains across multiple fixtures, or suspected collapsed pipes.
• Use a qualified drainage specialist for CCTV surveys, insurance reports, and any repair that needs excavation or pipe relining.
• If a problem involves gas appliances, carbon monoxide, or sealed boiler flue drainage, use a Gas Safe engineer rather than a general plumber.

How the job runs, from call to invoice

1. 11. The customer describes the symptoms, location, and urgency, and the contractor decides whether a CCTV survey, clearance, or repair visit is needed.
2. 22. The engineer arrives, checks access points, and confirms the scope before starting work.
3. 33. They inspect the drain with CCTV, trace the line, and identify defects such as fractures, root ingress, offsets, or silt build-up.
4. 44. The contractor gives a written quote or options summary, especially if excavation, patching, or relining is needed.
5. 55. If approved, they carry out the clearance or repair, then retest the line to confirm flow and defect removal.
6. 66. The engineer tidies the area, reinstates covers or disturbed surfaces where included, and explains any remaining risks or follow-up work.
7. 77. The customer receives the invoice and, for surveys, the written report with footage, defect log, and repair recommendations.